Will you be able to go into a store and demand X even if they only make Y ? Then sue them ?
Right. How about I have a store and I say the only product I sell are Judeo-Christian wedding cakes? These cakes come with a one-bride-one-groom caketopper, the names of the bride and groom, and a biblical phrase of MY choice written in icing around the outside of the largest layer of the cake.
And let’s just say that for any marriages that are of a certain type, I always choose a verse from Leviticus.
That is the cake I sell to everyone, no discrimination here, take it or leave it, as is.